nRF54L15 DFU mode

RE: nRF54L15 DFU mode

Andre MULLER — Fri, 05 Jun 2026 06:34:29 GMT

Hi, we don't need this function in our nRF54L15 hardware.

So you can close this ticket.

Andre.

RE: nRF54L15 DFU mode

Simonr — Wed, 03 Jun 2026 09:05:53 GMT

It looks like you have enabled a signature type requiring a verification, but don't do verification correctly in your application. Please see the Bootloader keys documentation page here: https://nrfconnectdocs.nordicsemi.com/ncs-bm/latest/nrf-bm/app_dev/dfu/bootloader_keys.html

Best regards,

Simon

RE: nRF54L15 DFU mode

Andre MULLER — Tue, 02 Jun 2026 15:22:04 GMT

Hello, I tried the sample mcuboot_recovery_retention with S145_softdevice/mcuboot.

Compiling and flashing is OK.

But, I have this errors :

*** Booting MCUboot v2.3.0-dev-fce4dac2e629 ***
*** Using nRF Connect SDK Bare Metal v2.0.0-e9041d77ec4c ***
I: Starting bootloader
E: ED25519 signature verification failed -140
E: ED25519 signature verification failed -140
E: ED25519 signature verification failed -140
E: Error: no bootable configuration found
E: Unable to find bootable image

Best regards.

Andre.

RE: nRF54L15 DFU mode

Simonr — Tue, 02 Jun 2026 11:56:03 GMT

Hi Andre Muller

Please see the documentation pages on DFU in the nRF Connect SDK Bare Metal option. Running the DFU process is described here: https://nrfconnectdocs.nordicsemi.com/ncs-bm/latest/nrf-bm/app_dev/dfu/ug_dfu.html

Best regards,

Simon